public override void ChannelWritabilityChanged(IChannelHandlerContext context)
{
PendingWriteQueue queue = _queueRef.Value;
IByteBuffer msg = (IByteBuffer)queue.Current;
if (msg is null)
{
return;
}
Assert.Equal(1, msg.ReferenceCount);
// This call will trigger another channelWritabilityChanged() event because the number of
// pending bytes will go below the low watermark.
//
// If PendingWriteQueue.remove() did not remove the current entry before triggering
// channelWritabilityChanged() event, we will end up with attempting to remove the same
// element twice, resulting in the double release.
queue.Remove();
Assert.Equal(0, msg.ReferenceCount);
}